Rust

Add `cockroach-admin` dropshot server #32581

Job	Run time
build-docs	13m 31s
check-omicron-deployment (ubuntu-22.04)	11m 18s
check-style	16s
check-omicron-deployment (macos-14)	8m 52s
clippy-lint	12m 41s
	46m 38s

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